CA1127277A - Digital variable voltage level control circuit with automatic return to neutral - Google Patents

Digital variable voltage level control circuit with automatic return to neutral

Info

Publication number
CA1127277A
CA1127277A CA349,427A CA349427A CA1127277A CA 1127277 A CA1127277 A CA 1127277A CA 349427 A CA349427 A CA 349427A CA 1127277 A CA1127277 A CA 1127277A
Authority
CA
Canada
Prior art keywords
coupled
counter
digital
circuit
generating
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
CA349,427A
Other languages
English (en)
French (fr)
Inventor
Robert P. Harshberger, Jr.
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ampex Corp
Original Assignee
Ampex Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Ampex Corp filed Critical Ampex Corp
Application granted granted Critical
Publication of CA1127277A publication Critical patent/CA1127277A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B15/00—Driving, starting or stopping record carriers of filamentary or web form; Driving both such record carriers and heads; Guiding such record carriers or containers therefor; Control thereof; Control of operating function
    • G11B15/18—Driving; Starting; Stopping; Arrangements for control or regulation thereof
    • G11B15/44—Speed-changing arrangements; Reversing arrangements; Drive transfer means therefor
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/07—Programme control other than numerical control, i.e. in sequence controllers or logic controllers where the programme is defined in the fixed connection of electrical elements, e.g. potentiometers, counters, transistors
    • G05B19/075—Programme control other than numerical control, i.e. in sequence controllers or logic controllers where the programme is defined in the fixed connection of electrical elements, e.g. potentiometers, counters, transistors for delivering a step function, a slope or a continuous function
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S388/00—Electricity: motor control systems
    • Y10S388/907—Specific control circuit element or device
    • Y10S388/912—Pulse or frequency counter
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S388/00—Electricity: motor control systems
    • Y10S388/907—Specific control circuit element or device
    • Y10S388/915—Sawtooth or ramp waveform generator

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Control Of Direct Current Motors (AREA)
  • Control Of Electric Motors In General (AREA)
  • Control Of Ac Motors In General (AREA)
CA349,427A 1979-05-14 1980-04-09 Digital variable voltage level control circuit with automatic return to neutral Expired CA1127277A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US38,951 1979-05-14
US06/038,951 US4289999A (en) 1979-05-14 1979-05-14 Digital variable voltage level control circuit with automatic return to neutral

Publications (1)

Publication Number Publication Date
CA1127277A true CA1127277A (en) 1982-07-06

Family

ID=21902863

Family Applications (1)

Application Number Title Priority Date Filing Date
CA349,427A Expired CA1127277A (en) 1979-05-14 1980-04-09 Digital variable voltage level control circuit with automatic return to neutral

Country Status (8)

Country Link
US (1) US4289999A (enExample)
BE (1) BE883257A (enExample)
CA (1) CA1127277A (enExample)
DE (1) DE3017650A1 (enExample)
FR (1) FR2456969A1 (enExample)
GB (1) GB2050733B (enExample)
IT (1) IT8048681A0 (enExample)
NL (1) NL8002774A (enExample)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4445880A (en) * 1981-07-20 1984-05-01 The International Paper Box Machine Co. Speed control for manufacturing process
GB2167189B (en) * 1984-11-14 1988-05-25 Vinten Ltd Continuous electrical control device
IL80707A (en) * 1985-12-23 1991-03-10 Hughes Aircraft Co Gaseous discharge device simmering circuit
IT1221246B (it) * 1988-02-04 1990-06-27 Sgs Thomson Microelectronics Alimentatore con tensione di uscita sviluppata gradualmente all' atto dell' accensione

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1148635B (de) * 1957-07-04 1963-05-16 Fernseh Gmbh Schaltungsanordnung zur Steuerung der Drehzahl und Drehrichtung eines elektrischen Stellmotors
DE1292902B (de) * 1965-06-23 1969-04-17 Licentia Gmbh Einrichtung zur digitalen Lageregelung
US3452258A (en) * 1966-08-19 1969-06-24 Westinghouse Electric Corp Digital-analog feedback control system employing solid state digital potentiometer
US3663881A (en) * 1969-12-12 1972-05-16 Metritape Continuous position sensing system
US3699492A (en) * 1970-11-16 1972-10-17 Nippon Musical Instruments Mfg Variable resistance device for a portamento performance on an electronic musical instrument
US3795851A (en) * 1972-01-03 1974-03-05 T Gage Digital servosystem
US3887856A (en) * 1972-05-25 1975-06-03 Burroughs Corp Push-button-operated motor speed control circuit
US3949175A (en) * 1973-09-28 1976-04-06 Hitachi, Ltd. Audio signal time-duration converter
GB1469708A (en) * 1974-04-24 1977-04-06 Post Office Analogue to digital and digital to analogue conversion
SE7406277L (sv) * 1974-05-10 1975-11-11 Luxor Industri Ab Programmerbar spenningskella.
DE2538437C3 (de) * 1975-08-29 1980-05-08 Elastogran Maschinenbau Gmbh & Co, 8021 Strasslach Mischvorrichtung für Mehrkomponentenkunststoffe mit Poren- oder Zellenstruktur, insbesondere Polyurethan
DE2626327C3 (de) * 1976-06-11 1980-08-14 Siemens Ag, 1000 Berlin Und 8000 Muenchen Digitales, elektrisches Meßgerät
US4149116A (en) * 1976-06-23 1979-04-10 Matsushita Electric Industrial Co., Ltd. Motor speed control system
US4155037A (en) * 1977-06-08 1979-05-15 The Continental Group, Inc. Data acquisition and display device
JPS588235B2 (ja) * 1978-11-15 1983-02-15 日本ビクター株式会社 モ−タの正転、逆転連続速度制御方式

Also Published As

Publication number Publication date
GB2050733A (en) 1981-01-07
NL8002774A (nl) 1980-11-18
DE3017650A1 (de) 1980-11-20
IT8048681A0 (it) 1980-05-14
FR2456969B1 (enExample) 1984-04-13
US4289999A (en) 1981-09-15
BE883257A (fr) 1980-09-01
FR2456969A1 (fr) 1980-12-12
GB2050733B (en) 1984-02-15

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Legal Events

Date Code Title Description
MKEX Expiry